Road-sanding machine.



J. D. CURTI S. ROAD SANDING MACHINE.

APPLICATION FILED AUG.26, 1912.

Patented Feb, 15,1916.

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JOHN D; cUnT'fs or won'oES'TEn, MASSACHUSETTS, ASSIGNOB To nronannson MANU- 'FACTUBING- COMPANY, or WORCESTER, MASSACHUSETTS, A CORPORATION 0F MASSACHUSETTS.

BOAD-SA'NDIfiG mncninn.

Patented Feb. 15, 1916.

Application h 'ea August as, 1912. semi No. 717,018.

To all whom it may concern:

Be it known that I, JOHN D. CURTIS, a citizen of the United States, residing at Worcester, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Road-Sanding Machines, of which the following is a specification, accompanied by drawings forming a part. of the same.

The'object of my present invention 1s to provide an apparatus adapted to distribute sand uniformly over the surface of a hlghway and adapted to be used in connectlon with an apparatus for distributing 011 or similar material upon a highway. I accomplish this object by means of the construction and arrangement of parts as hereinafter described, the novel features being pointed out in the annexed claims.

Referring to the accompanying drawings, Figure 1 represents a side elevation of an oiling and sanding apparatus, the latter being shown in sectional View and embodying my present invention. Fig. 2 is a top view of the sanding apparatus.

Similar reference characters refer to similar parts in the different views.

Referring to the accompanying drawings,

1 denotes an oil tank or receptacle provided with means for distributing oil, tarvia, b1-

tumen, or the like, either in a heated or cold state upon the roadway through a series of pipes 2. The apparatus is supported upon wheels 3 having a pawl and ratchet connection with a rotating shaft passing beneath the tank 1 and provided on opposite sides of the tank with sprocket wheels one of which is shown at 4, Fig. 1. The sills 5 and 6 of the tank 1' are extended rearwardly and form a Support for the sanding apparatus, the rear ends of the sills being supported upon a truck wheel 7.

The sanding apparatus comprlses first, ,a

receptacle for the sand, consisting in the present instance of a hopper 8 having an opening at the bottom communicating with a sand pocket 9 into which sand flows by gravity from the hopper 8 through the openmg 10; secondly, in a distributing mechanism for applying the sand uniformly to the surface of the highway; and third y, in a transferring mechanism by which the sand is transferred at a predetermined rate from the sand recepltacle to the sand distributing mechanism. hislatter element comprises in the present instance an elevator belt 11 carriedupon sprocket wheels having parallel shafts 12 and 1 3 and .provided with cup shaped buckets 14. QThe elevator belt and buckets are moved in the direction of the arrow 15 by slides downward upon a narrow platform 17.

The distributing means by which the sand is laid uniformly upon the surface of the highway consists in the present instance of a reciprocating sieve 18 sliding in horizontal ways in the framework of the machine and given a. short rapid reciprocating movemechanism hereinafter described, by which the sand is carried from the pocket 9 and delivered upon an inclined surface 16 over which the sand gradually ment by means of a slotted cam 19. The

surface of the sieve 18 is preferably slightly inclined, asrepresented in Fig. 1, to allow any accumulation too coarse to pass through the meshes of the sieve to fall over the edge I extend from the platform 17 a series of bars 21 transversely across the sieve and slightly raised above its upper surface. Mo-

tion is imparted to the movable parts of the 20 of the framework and be deposited upon apparatus from the s rocket wheels. 4 to a shaft 22 mounted at t e rear'of the oil tank 1 upon the sills 5 and 6. The shaft 22 carries at one enda sprocket wheel23 which imparts motion to the shaft 13 through a chain belt 24. The shaft 13 imparts a rotatin movement through its sprocket whee s to the elevator belt 11. The shaft 13 'through a chain belt 25 imparts rotation to a shaft 26 upon which is mounted the cam- 19 having a cam slot 27 engaging a stud .28 projecting from the under slde of the reciprocating sieve 18.

By placing the sanding apparatus at the rear 0 the oiling apparatus and locating the distributing mechanism in front of the truck 7 none of the supporting wheels are caused to pass over the 'unsanded and oiled ortionof the roadwa the supportin w eels 3 traveling in a Vance of the 0' ed surface and the truck 7 at the rearof the sanded surface. The ho per 8 may be replenished by sand shovele from a vehicle at its side:

and the amount of sand distributed over any given area may be readily controlled by i movement of the sieve 18.

and means behind said distributing means for spreading sand over the roadway, part of the supporting wheels being in front of said distributing means and the remainder of the supporting wheels being behind the sand spreading means.

2. In apparatus of the class specified, a,

wheeled vehicle providing an oil distributing'means and a sand distributing means disposed consecutively thereon in the for-' Ward travel of the vehicle, and in advance of one or moreof the supporting wheels thereof, whereb. the travel of said wheel or wheels over t e oiled but unsanded roadwag is avoided. ated this 22nd day of August, 1912.

. JOHN D. CURTIS. V

Witnesses:

PENELOPE GOMIBERBACH, Nmm WHALnN. 

